In my current “old” account is missing these parts overview which one sees in the upper right in the workshop or lower right when buying a silver box. I discovered that in my new account. And why can I buy only one and not five silver boxes there? I also looked into the “wiki” … but that’s not up to date.
I hope you can at least do something against the first problem.
(Ps I have translated this text with a translator, in case of errors or the like I apologize … not ^ ^)